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16 procęt
40 procęt
81 procęt
45 procęt
0,25*150 = 37,5
b) 20% liczby 80
0,20 * 80 = 16
c) 10% liczby 400
0,10 * 400 = 40
d) 30% liczby 270
0,30 * 270 = 81
e) 50% liczby 90
0,50 * 90 = 45